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Nucleus accumbens

The nucleus accumbens (NAcc), also known as the accumbens nucleus or as the nucleus accumbens septi or as part of the pleasure center, is a collection of neurons and forms the main part of the ventral striatum. It is thought to play an important role in reward, pleasure, laughter, addiction, aggression, fear, and the placebo effect. Each half of the brain has one nucleus accumbens.

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